On Tue, 26 Jan 2010, Tom Tromey wrote:> > In non-stop mode (where you can stop one thread but leave the others> running), gdb wants to have the breakpoints always inserted. So,> something must emulate the displaced instruction.

I'm almost totally uninterested in breakpoints that actually re-write instructions. It's impossible to do that efficiently and well, especially in threaded environments.

So if you do instruction rewriting, I can only say "that's your problem".

But using the hardware breakpoints should automatically DTRT, both wrt threads _and_ wrt restarting. Sure, there's onyl a limited number of them, so if somebody wants more than that they are kind of screwed, but that's just how life is.